Searching for shields
Army officials apparently chose Quick Kill despite recommendations by the Pentagon’s Office of Force Transformation that it consider the Israeli-developed Trophy active protection system, which is far closer to going into service – the Israeli defence force is due to make a procurement decision for ground vehicles in the coming months.
Rafael’s Trophy appears similar to Quick Kill, and the manufacturer says it is being considered for adaptation to protect helicopters. The threat detection and warning subsystem consists of several sensors, including a search radar with four flat-panel antennas located around the protected vehicle to provide full hemispherical coverage. The neutralisation process will take place only if the threat is assessed as heading for the platform.
Israel Military Industries (IMI) has also developed an APS, dubbed Iron Fist, which is claimed to be capable of defeating a wide range of unguided anti-tank rockets, guided missiles and kinetic energy (KE) rounds. During final tests conducted towards the end of 2005, Iron Fist successfully intercepted a range of anti-tank projectiles, including KE rounds.
Designed to neutralise a threat without initiating the warhead, the system could be adapted for helicopters as the interception creates neither blast nor fragments. “The system’s interceptor is somewhat like a mortar round, carrying insensitive-munitions blast explosive in a combustible envelope,” says Yuval Karakookly, head of IMI’s APS business unit.
Shaped like a small mortar bomb, the Iron Fist interceptor uses only the blast effect to defeat the threat, crushing the soft components of a shaped charge or deflecting and destabilising the missile or kinetic rod in flight. The interceptor is made of a combustible envelope that is consumed in the explosion.
The first two Iron Fist prototypes were installed on an APC and a main battle tank. “In most of the tests, the vehicle sustained no damage at all while, in a few cases, minimal damage was created by the impact of the missile’s tail,” says IMI president Avi Felder. The company is currently developing a lighter version to fit a Humvee.